<template>
  <view class="cart_container" v-if="cart.length !== 0">
    <!-- 收货地址 -->
    <my-address></my-address>
    
    <!-- 标题区域 -->
    <view class="cart-title">
      <!-- 左侧图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    
    <!-- 购物车商品 -->
    <block v-for="(goods, i) in cart" :key="i">
      <my-goods :goods="goods" :showRadio="true" :showNum="true" @radio-change="radioChangeHandler" @num-change="numChangeFn"></my-goods>
    </block>
    
    <!-- 结算 -->
    <my-settle></my-settle>
  </view>
  
  <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
  import { mapState, mapGetters, mapMutations } from 'vuex'
  // 导入自己封装的 mixin 模块
  import badgeMix from '@/mixins/tarbar-badge.js'
  export default {
    // 将 badgeMix 混入到当前的页面中进行使用
    mixins:[badgeMix],
    data() {
      return {
        
      };
    },
    computed: {
      ...mapState('m_cart', ['cart']),
      ...mapGetters('m_cart', ['total']),     
    },
    onLoad() {
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount']),
      // 父组件radio事件
      radioChangeHandler(goods) {
        console.log('my-goods子组件的radio改变了', goods)
        this.updateGoodsState(goods)
      },
      // 子组件numbox中数量变化事件
     numChangeFn(e) {
       // console.log('e', e)
       this.updateGoodsCount(e)
     }
    }
  }
</script>

<style lang="scss">
  .cart-title {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;
    .cart-title-text {
      margin-left: 10px;
    }
  }
  // 空白购物车
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  
    .empty-img {
      width: 90px;
      height: 90px;
    }
  
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }
</style>
